All Articles
The Art of Finding Coarse Gold Part IV—Recovery of Coarse Gold From Alluvial Placers
March 2005 by Chris Ralph
This last installment in the series will look at methods for finding and recovering coarse gold from alluvial (river and stream) placer environments. Unlike the residual and eluvial placers that we have considered previously, the force of flowing...
Ask the Experts
Ore testing and other advice for starting up a mining operation.
Ask the Experts
• How many parts per million make a project viable?
The Disappearance of State Mining Departments
Unfortunately, mining is politically unpopular and support of the mining industry, no matter how many jobs it brings to a state, even in times of difficult financial need, is never popular among politicians of any stripe.
Old Mine Sites and New Technology
We’ve had two trips to the deserts of Nevada and explored mines and mill sites, hiked miles of ravines in California, and swung our detector coils over thousands of square yards of bedrock.
$50 Million Swiped in Diamond Heist
Eight masked gunmen forced their way through the security fence at Brussels’ international airport, drove onto the tarmac and snatched some $50 million worth of diamonds from the hold of a Swiss-bound plane without firing a shot.
How To Locate Diamonds
How to locate diamonds: This article focuses on the principal host rock for diamond and describes some gemstones (and kimberlitic indicator minerals) typically found with diamond.
Gold Prospecting: For Better or Worse
We all love to see that first glimmer of gold when it peeks out from under the black sand in our pan, or feel the weight of a nugget in our scoop when we dig a good target. But sometimes things don’t go quite so smoothly.
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The Bawl Mill
• $100 Million Lost on Faulty ESA Listing
• Geologists Locate Giant Gemstones
• Miner Wins Important Victory Against Forest Service
• Philippines Asks Foreigners to Invest in Mining
• Healthy Interest at Recent Vancouver Conferences
• Idaho Silver Miners Come to Aid of Tsunami Victims
• Picks & Pans: In Search of a Vein: Looking for Hardrock in the Talkeetna Mountains
• Researchers Trace History of Hope Diamond
• The "Rip-Roaring" Flood That Washed Out Mazuma, Nevada
• Looking Back
• Resolution Copper Mine, Arizona
• Company Notes
• China Ups Investment in Foreign Minerals
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
